Scope
ISO 9612:2009
Occupational Noise Exposure Measurement
This standard specifies methods for measuring and assessing noise exposure of workers in occupational environments to determine compliance with exposure limits and identify hearing protection needs. The measurement protocols account for temporal variations in noise and worker movement to characterize daily noise exposure levels. Results are critical for occupational health and safety compliance, hearing loss prevention programs, and workplace risk assessment. Accredited laboratories ensure measurement uncertainty, calibration standards, and data interpretation meet regulatory requirements for legal and health-safety defensibility.
What it measures
- Equivalent continuous A-weighted sound pressure level (Leq,8h)
- Peak sound pressure levels and impulsive noise
- Daily noise exposure level (LEX,8h)
- Frequency-weighted noise exposure
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DIN EN ISO 4871
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BS EN ISO 4871
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NF EN ISO 4871
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UNI EN ISO 4871
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UNE EN ISO 4871
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NEN EN ISO 4871
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DIN EN ISO 11201
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BS EN ISO 11201
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NF EN ISO 11201
๐ฎ๐น
UNI EN ISO 11201
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UNE EN ISO 11201
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NEN EN ISO 11201
1,670
Accredited labs
18
Countries
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DIN EN 933-11
DIN EN 12390-3
DIN EN 933-3
DIN EN 12390-7
DIN EN 12697-5
+ 3 more
DC CURRENT
LENGTH
DC Resistance
DC VOLTAGE
Cold junction compensation
+ 3 more
Corserv Solutions
Active
DIN EN 933-1
(PCM) based on HSG 248
(HSG 248) โ 2021
DIN EN 932-1
DIN EN 932-2
+ 3 more
requirements of BS EN 15259:2007
IEC 60519-11
Based on EN 14791:2017
DIN EN 13284-1
BS EN BS EN ISO 21877:2019
+ 3 more
Gas pressure (absolute)
Gas pressure (gauge)
Hydraulic pressure (gauge)
Hydraulic Pressure (absolute)
PRESSURE (contโd)
+ 1 more
DNKA
Active
staining based on HSG 248.
(PCM) based on HSG 248
(HSG 248) โ 2021
QSOP 03 based on HSG 248
QSOP 01 based on HSG 248
Decus Research
Active
1) MS08P based on BS EN ISO
MS02P based on BS EN ISO
MS03P based on BS EN ISO
MS06P based on BS EN ISO
MF07P based on BS EN ISO
+ 3 more
Devonport Royal Dockyard
Active
Specific Values 1 ๏
RF Power
RF Attenuation 10 MHz to 1 GHz
Other values -20 dBm to +20 dBm
Devonport Royal Dockyard
Active
BS 4206:1967 (superseded)
ISO 5173
ISO 7438
BS EN ISO 9606-2:2004
BS 131-5:1965
+ 3 more
Diatec Diagnostics
Active
AUDIOMETRIC EQUIPMENT
Attenuator linearity
Microphones
EAR SIMULATORS
Class LS, 1 and 2
Druck
Active
Gas pressure (absolute)
Hydraulic pressure (gauge)
Gas pressure (gauge)
(At low current)
Specific values (continued)
+ 3 more
DynaGreen Environmental UK
Active
DIN EN 14791
IEC 60519-11
BS EN ISO 16911-1:2013 using
DIN EN 14792
DIN EN 13126-19
+ 3 more
BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
BS EN ISO 140-4:1998
ISO 1407
BS EN ISO 9972:2015
+ 1 more
and Appx. 3 of HSG 227 (2004))
in Appendix 5 of HSG 227 (2004)
guides HSG 264 (2012) and
(HSG 264, 2012)
ERC Testing
Active
DIN EN 1863-1
BS EN ISO 10077-1:2006
published 2024) for BS EN
DIN EN 1863-2
BS EN ISO 10077-2:2017
+ 3 more
Efectis UK/Ireland
Active
EN 1364-3
DIN EN 1366-4
EN 1364-4
BS 476-21
BS 476-22
+ 3 more
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